EyeVibe Prema Beauty Did not refund money after I returned product Internet

First of all, when I ordered a "free sample" it was not indicated anywhere that I would be charged for an ongoing subscription. When I tried to cancel, they told me I had to return the bottle.  Fine, I did so. They stressed the need for me to put my return code (RMA) on the package.  I wrote my RMA on the envelope and every single side of the eyevibe box.  A month went by...I got an email confirming my cancelation...I threw away the tracking number since my cancellation had been confirmed...Then, the next day, I was charge $92.79.  When I called to confirm that this would be refunded shortly, given the cancellation, they told me that they never got the returned item and that I would have to give them a mail tracking number. I said no, but I mailed it to the address provided, and had my RMA all over it.  This is a scam on so many levels...the last level being their "confirmation" of your cancellation, prompting you to believe you are done with them, making you believe there is no more need to keep something like a tracking number, and then charging you after.ward and leaving you no way to sue them because you can't do anything without the proof of the tracking number.  Keep your tracking number....Keep it for a year after they tell you that you are done with them in fact...Crooks and lyers and theives.